CN103408312B - Aluminum-silicon-based lightweight castable and preparation method thereof - Google Patents
Aluminum-silicon-based lightweight castable and preparation method thereof Download PDFInfo
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Abstract
The invention particularly relates to an aluminum-silicon-based lightweight castable and a preparation method thereof. The technical scheme is as follows: the method comprises the steps of firstly preparing 30-70 wt% of aluminum-silicon-based lightweight aggregate, 15-35 wt% of aluminum-silicon-based fine powder, 10-20 wt% of abandoned sand powder and 5-15 wt% of high-temperature cement, which serve as raw materials, adding a water reducing agent which accounts for 0.15-0.25 wt% of the raw materials and water which accounts for 15-25 wt% of the raw materials, stirring, carrying out casting molding, and curing for 12-24 hours at room temperature; and drying for 20-36 hours at the temperature of 100-200 DEG C, and carrying out heat preservation for 2-8 hours at the temperature of 1,000-1,300 DEG C, thereby obtaining the aluminum-silicon-based lightweight castable. The method has the characteristics that resources are saved, the environment is protected, and the cost is reduced; and the prepared aluminum-silicon-based lightweight castable is low in volume density, low in heat conductivity, high in strength and low in heavy firing line change rate, and can be directly applied to kilns and other heat engineering equipment.
Description
Technical field
The invention belongs to lightening casting material technical field, be specifically related to a kind of alumina-silica lightening casting material and preparation method thereof.
Background technology
Be accompanied by consuming excessively and the bulk deposition of waste of Nonrenewable energy resources, resources conservation and environmental friendliness have become the two principal themes in epoch.The Thermal Equipments such as various Industrial Stoves are the visual plants in industrial production, are also the equipment that extremely consumes the energy and raw material.Therefore, the heat-insulation and heat-preservation of kiln and Thermal Equipment is to ensure its long service life and the low important foundation of energy consumption, therefore exploitation lightweight, high-strength, lower thermal conductivity and cheaply light thermal-shield refractory material are research topics that has significance, safe operation that can not only support equipment and effectively reduce energy consumption, and can significantly reduce use cost.
Heat insulation, the heat insulating refractory material of various materials mainly adopts following methods preparation: (1) burnout substances addition method, and by adding a certain amount of burnout substances pore-creating, conventional burnout substances is as polystyrene spheres, sawdust; (2) foaming process, by making the foam pore-creating of stablizing and having certain film toughness, conventional whipping agent has rosined soap, sodium lauryl sulphate etc.; (3) porous material method, by adding low-density light material, as perlite, alumina hollow ball etc.
At present, the conventional raw material price of preparing alumina-silica light cinder brick is still higher, cannot fundamentally reduce the production cost of alumina-silica light cinder brick." a kind of aluminum-silicon light heat insulation brick and preparation method thereof " patented technology (CN102167622A), disclose taking lightweight alumina aggregate, bauxite chamotte as raw material, high-temperature cement, organic polymer and silicon powder are as bonding agent, casting after mixing, makes aluminum-silicon light heat insulation brick.The defect of the method is mainly: the raw materials cost of (1) this product is higher; (2) complex manufacturing, energy consumption is high; (3) raw material adopts the natural matter that margin tightens, and is unfavorable for the Sustainable development of resource.
Summary of the invention
The present invention is intended to overcome prior art defect, and object is to provide and a kind ofly can economizes on resources, the preparation method of protection of the environment and the alumina-silica lightening casting material that reduces costs; Have the advantages that volume density is little, thermal conductivity is low, intensity is high and reheating linear change rate on reheating is little with the prepared alumina-silica lightening casting material of this method.
For achieving the above object, the technical solution adopted in the present invention is: alumina-silica fine powder, the discarded molding sand powder of 10 ~ 20wt% and the high-temperature cement of 5 ~ 15wt% of the first alumina-silica aglite taking 30 ~ 70wt%, 15 ~ 35wt% are as raw material, the water reducer of additional described raw material 0.15 ~ 0.25wt% and the water of 15 ~ 25wt% again, stir, casting, room temperature maintenance 12 ~ 24h; Then dry 20 ~ 36h under 100 ~ 200 DEG C of conditions is incubated 2 ~ 8h under 1000 ~ 1300 DEG C of conditions, obtains alumina-silica lightening casting material.
The preparation method of described alumina-silica aglite is: first taking the alumina-silica fine powder of 50 ~ 90wt% and the clay of 10 ~ 50wt% as raw material, stir 8 ~ 12h, the pore-forming material of the bonding agent of additional described raw material 5 ~ 10wt%, 15 ~ 35wt% and the water of 7 ~ 20wt% again, ageing mixture 24 ~ 48h, compression moulding; Then dry 4 ~ 24h under 80 ~ 200 DEG C of conditions is incubated 2 ~ 10h under 1000 ~ 1400 DEG C of conditions, and fragmentation, obtains alumina-silica aglite.
Described alumina-silica fine powder is ceramic tile waste material, and its particle diameter is less than 0.074mm; The main chemical compositions of alumina-silica fine powder is: Al
2o
3>=40wt%, SiO
2>=45wt%, Na
2o≤0.5wt%, K
2o≤2.5wt%.
The particle diameter of described discarded molding sand powder is less than 0.088mm; The main chemical compositions of discarded molding sand powder is: Al
2o
3>=35wt%, SiO
2>=50wt%, ZrO
2≤ 5.5wt%.
Described water reducer is one or both in tripoly phosphate sodium STPP, Sodium hexametaphosphate 99 and polyacrylic water reducer.
The particle diameter of described clay is less than 0.088mm; The main chemical compositions of clay is: Al
2o
3content>=30wt%, SiO
2content>=45wt%, TiO
2content≤0.8wt%, Fe
2o
3content≤2.0wt%.
Described pore-forming material is the one in chaff, straw, sawdust and rice husk.
Described bonding agent is one or both in Walocel MT 20.000PV, aluminium dihydrogen phosphate, polyvinyl alcohol and dextrin.
Owing to adopting technique scheme, the present invention compared with prior art has following positively effect:
1, the present invention is raw materials used has not only saved for current bulk deposition and the discarded ceramic tile of not being fully used the expense of processing a large amount of waste ceramics, has also saved resource, turns waste into wealth, therefore environmental friendliness and production cost are low.
2, the present invention adopts burnout substances addition method to prepare alumina-silica aglite, and its raw material, for discarded tile powder, has been realized the recycling to solid waste, and prepared alumina-silica aglite tap density is 0.5 ~ 0.7g/cm
3, technique is simple.
3, the present invention, by adding homemade alumina-silica aglite, can play skeleton supporting role in mould material, improves the intensity of goods.
4, the prepared alumina-silica light cinder brick of the present invention after testing: volume density is lower than 1.7g/cm
3; Cold crushing strength is 10.0 ~ 20.0MPa; After 1000 ~ 1250 DEG C of burnings, compressive strength is 25.0 ~ 45.0MPa; Thermal conductivity is 0.25 ~ 0.45W/ (mK); Reheating linear change rate on reheating is lower than ± 0.5%; Therefore product performance are good.
5, the present invention adopts the mode of casting, can be processed into difform brick type according to purposes, be applied to working lining, the furnace roof of kiln and various Thermal Equipments, in order to heat insulating and reduction energy consumption, simultaneously can alleviate body of heater quality, guarantee that production safety carries out efficiently.
Therefore, the present invention have economize on resources, protection of the environment and the low feature of cost; Prepared alumina-silica lightening casting material has the advantages that volume density is little, thermal conductivity is low, intensity is high and reheating linear change rate on reheating is little, is directly used in kiln and other Thermal Equipments.
Embodiment
Below in conjunction with embodiment, the present invention will be further described, not limiting the scope of the invention.
For avoiding repetition, first relevant technologies improve parameter unification involved this embodiment is described below:
Described alumina-silica fine powder is ceramic tile waste material, and its particle diameter is less than 0.074mm; The main chemical compositions of alumina-silica fine powder is: Al
2o
3>=40wt%, SiO
2>=45wt%, Na
2o≤0.5wt%, K
2o≤2.5wt%.
The particle diameter of described discarded molding sand powder is less than 0.088mm; The main chemical compositions of discarded molding sand powder is: Al
2o
3>=35wt%, SiO
2>=50wt%, ZrO
2≤ 5.5wt%.
The particle diameter of described clay is less than 0.088mm; The main chemical compositions of clay is: Al
2o
3content>=30wt%, SiO
2content>=45wt%, TiO
2content≤0.8wt%, Fe
2o
3content≤2.0wt%.
Described pore-forming material is the one in chaff, straw, sawdust and rice husk.
Described bonding agent is one or both in Walocel MT 20.000PV, aluminium dihydrogen phosphate, polyvinyl alcohol and dextrin.
embodiment 1
A kind of alumina-silica lightening casting material and preparation method thereof.Alumina-silica fine powder, the discarded molding sand powder of 15 ~ 20wt% and the high-temperature cement of 10 ~ 15wt% of the first alumina-silica aglite taking 30 ~ 40wt%, 30 ~ 35wt% are as raw material, the tripoly phosphate sodium STPP of additional described raw material 0.15 ~ 0.20wt% and the water of 15 ~ 20wt% again, stir casting; Room temperature maintenance 12 ~ 24h, then dry 20 ~ 24h under 100 ~ 120 DEG C of conditions is incubated 2 ~ 4h under 1000 ~ 1100 DEG C of conditions, obtains alumina-silica lightening casting material.
The preparation method of the alumina-silica aglite in the present embodiment: first taking the alumina-silica fine powder of 50 ~ 60wt% and the clay of 40 ~ 50wt% as raw material, stir 8 ~ 12h, the pore-forming material of the bonding agent of additional described raw material 5 ~ 10wt%, 15 ~ 35wt% and the water of 7 ~ 20wt% again, ageing mixture 24 ~ 48h, compression moulding; Then dry 4 ~ 24h under 80 ~ 200 DEG C of conditions is incubated 2 ~ 10h under 1000 ~ 1400 DEG C of conditions, and fragmentation, obtains alumina-silica aglite.
The prepared alumina-silica lightening casting material of the present embodiment is after testing: volume density is lower than 1.7g/cm
3; Cold crushing strength is 5.0 ~ 20.0MPa; After 1100 ~ 1200 DEG C of burnings, compressive strength is 30.0 ~ 35.0MPa; Thermal conductivity is 0.25 ~ 0.30W/ (mK); Reheating linear change rate on reheating is lower than ± 0.5%.
embodiment 2
A kind of alumina-silica lightening casting material and preparation method thereof.Alumina-silica fine powder, the discarded molding sand powder of 15 ~ 20wt% and the high-temperature cement of 5 ~ 10wt% of the first alumina-silica aglite taking 40 ~ 50wt%, 25 ~ 30wt% are as raw material, the Sodium hexametaphosphate 99 of additional described raw material 0.20 ~ 0.25wt% and the water of 20 ~ 25wt% again, stir, casting, room temperature maintenance 12 ~ 24h; Then dry 24 ~ 28h under 120 ~ 140 DEG C of conditions is incubated 4 ~ 6h under 1100 ~ 1200 DEG C of conditions, obtains alumina-silica lightening casting material.
The preparation method of the alumina-silica aglite in the present embodiment: first taking the alumina-silica fine powder of 60 ~ 70wt% and the clay of 30 ~ 40wt% as raw material, stir 8 ~ 12h, the pore-forming material of the bonding agent of additional described raw material 5 ~ 10wt%, 15 ~ 35wt% and the water of 7 ~ 20wt% again, ageing mixture 24 ~ 48h, compression moulding; Then dry 4 ~ 24h under 80 ~ 200 DEG C of conditions is incubated 2 ~ 10h under 1000 ~ 1400 DEG C of conditions, and fragmentation, obtains alumina-silica aglite.
The prepared alumina-silica lightening casting material of the present embodiment is after testing: volume density is lower than 1.6g/cm
3; Cold crushing strength is 10.0 ~ 15.0MPa; After 1150 ~ 1250 DEG C of burnings, compressive strength is 28.0 ~ 33.0MPa; Thermal conductivity is 0.27 ~ 0.33W/ (mK); Reheating linear change rate on reheating is lower than ± 0.5%.
embodiment 3
A kind of alumina-silica lightening casting material and preparation method thereof.It is characterized in that first the discarded molding sand powder of the discarded tile powder of the alumina-silica aglite of 50 ~ 60wt%, 20 ~ 25wt%, 15 ~ 20wt% and the high-temperature cement of 5 ~ 10wt% evenly being mixed, the polyacrylic water reducer of additional described raw material 0.15 ~ 0.20wt% and the water of 15 ~ 17wt% again, stir, casting, room temperature maintenance 12 ~ 24h, then dry 28 ~ 32h under 140 ~ 160 DEG C of conditions is incubated 6 ~ 8h under 1150 ~ 1250 DEG C of conditions, obtains alumina-silica lightening casting material.
The preparation method of the alumina-silica aglite in the present embodiment is: first taking the alumina-silica fine powder of 70 ~ 80wt% and the clay of 20 ~ 30wt% as raw material, stir 8 ~ 12h, the pore-forming material of the bonding agent of additional described raw material 5 ~ 10wt%, 15 ~ 35wt% and the water of 7 ~ 20wt% again, ageing mixture 24 ~ 48h, compression moulding; Then dry 4 ~ 24h under 80 ~ 200 DEG C of conditions is incubated 2 ~ 10h under 1000 ~ 1400 DEG C of conditions, and fragmentation, obtains alumina-silica aglite.
The prepared alumina-silica lightening casting material of the present embodiment is after testing: volume density is lower than 1.7g/cm
3; Cold crushing strength is 13.0 ~ 16.0MPa; After 1150 ~ 1250 DEG C of burnings, compressive strength is 35.0 ~ 40.0MPa; Thermal conductivity is 0.35 ~ 0.45W/ (mK); Reheating linear change rate on reheating is lower than ± 0.5%.
embodiment 4
A kind of alumina-silica lightening casting material and preparation method thereof.It is characterized in that being first raw material by the high-temperature cement of the discarded molding sand powder of the discarded tile powder of the alumina-silica aglite of 60 ~ 70wt%, 15 ~ 20wt%, 10 ~ 15wt% and 5 ~ 10wt%, the Sodium hexametaphosphate 99 of the tripoly phosphate sodium STPP of additional described raw material 0.05 ~ 0.10wt%, 0.10 ~ 0.15wt% and the water of 17 ~ 20wt% again, stir, casting, room temperature maintenance 12 ~ 24h; Then dry 32 ~ 36h under 160 ~ 180 DEG C of conditions is incubated 2 ~ 5h under 1200 ~ 1300 DEG C of conditions, obtains alumina-silica lightening casting material.
The preparation method of the alumina-silica aglite in the present embodiment is: first taking the alumina-silica fine powder of 80 ~ 90wt% and the clay of 10 ~ 20wt% as raw material, stir 8 ~ 12h, the pore-forming material of the bonding agent of additional described raw material 5 ~ 10wt%, 15 ~ 35wt% and the water of 7 ~ 20wt% again, ageing mixture 24 ~ 48h, compression moulding; Then dry 4 ~ 24h under 80 ~ 200 DEG C of conditions is incubated 2 ~ 10h under 1000 ~ 1400 DEG C of conditions, and fragmentation, obtains alumina-silica aglite.
The prepared alumina-silica lightening casting material of the present embodiment is after testing: volume density is lower than 1.7g/cm
3; Cold crushing strength is 15.0 ~ 20.0MPa; After 1200 ~ 1300 DEG C of burnings, compressive strength is 40.0 ~ 45.0MPa; Thermal conductivity is 0.30 ~ 0.35W/ (mK); Reheating linear change rate on reheating is lower than ± 0.5%.
embodiment 5
A kind of alumina-silica lightening casting material and preparation method thereof.It is characterized in that being first raw material by the high-temperature cement of the discarded molding sand powder of the discarded tile powder of the alumina-silica aglite of 35 ~ 40wt%, 30 ~ 35wt%, 10 ~ 15wt% and 10 ~ 15wt%, the polyacrylic water reducer of the tripoly phosphate sodium STPP of additional described raw material 0.05 ~ 0.10wt%, 0.10 ~ 0.15wt% and the water of 17 ~ 22wt% again, stir, casting, room temperature maintenance 12 ~ 24h; Then dry 30 ~ 34h under 170 ~ 200 DEG C of conditions is incubated 5 ~ 8h under 1150 ~ 1250 DEG C of conditions, obtains alumina-silica lightening casting material.
The preparation method of the alumina-silica aglite in the present embodiment is with embodiment 1.
The prepared alumina-silica lightening casting material of the present embodiment is after testing: volume density is lower than 1.7g/cm
3; Cold crushing strength is 18.0 ~ 23.0MPa; After 1150 ~ 1250 DEG C of burnings, compressive strength is 33.0 ~ 37.0MPa; Thermal conductivity is 0.32 ~ 0.37 W/ (mK); Reheating linear change rate on reheating is lower than ± 0.5%.
embodiment 6
A kind of alumina-silica lightening casting material and preparation method thereof.It is characterized in that being first raw material by the high-temperature cement of the discarded molding sand powder of the discarded tile powder of the alumina-silica aglite of 45 ~ 50wt%, 25 ~ 30wt%, 15 ~ 20wt% and 10 ~ 15wt%, the polyacrylic water reducer of the tripoly phosphate sodium STPP of additional described raw material 0.07 ~ 0.12wt%, 0.08 ~ 0.13wt% and the water of 20 ~ 23wt% again, stir, casting, room temperature maintenance 12 ~ 24h; Then dry 26 ~ 30h under 180 ~ 200 DEG C of conditions is incubated 5 ~ 8h under 1050 ~ 1150 DEG C of conditions, obtains alumina-silica lightening casting material.
The preparation method of the alumina-silica aglite in the present embodiment is with embodiment 2.
The prepared alumina-silica lightening casting material of the present embodiment is after testing: volume density is lower than 1.6g/cm
3; Cold crushing strength is 10.0 ~ 13.0MPa; After 1050 ~ 1150 DEG C of burnings, compressive strength is 25.0 ~ 30.0MPa; Thermal conductivity is 0.33 ~ 0.38W/ (mK); Reheating linear change rate on reheating is lower than ± 0.5%.
embodiment 7
A kind of alumina-silica lightening casting material and preparation method thereof.It is characterized in that being first raw material by the high-temperature cement of the discarded molding sand powder of the discarded tile powder of the alumina-silica aglite of 55 ~ 60wt%, 15 ~ 25wt%, 15 ~ 20wt% and 10 ~ 15wt%, the Sodium hexametaphosphate 99 of the tripoly phosphate sodium STPP of additional described raw material 0.05 ~ 0.10wt%, 0.10 ~ 0.15wt% and the water of 23 ~ 25wt% again, stir, casting, room temperature maintenance 12 ~ 24h; Then dry 22 ~ 26h under 130 ~ 150 DEG C of conditions is incubated 3 ~ 6h under 1200 ~ 1300 DEG C of conditions, obtains alumina-silica lightening casting material.
The preparation method of the alumina-silica aglite in the present embodiment is with embodiment 3.
The prepared alumina-silica lightening casting material of the present embodiment is after testing: volume density is lower than 1.6g/cm
3; Cold crushing strength is 13.0 ~ 16.0MPa; After 1200 ~ 1300 DEG C of burnings, compressive strength is 23.0 ~ 28.0MPa; Thermal conductivity is 0.28 ~ 0.33W/ (mK), and reheating linear change rate on reheating is lower than ± 0.5%.
embodiment 8
A kind of alumina-silica lightening casting material and preparation method thereof.It is characterized in that being first raw material by the high-temperature cement of the discarded molding sand powder of the discarded tile powder of the alumina-silica aglite of 65 ~ 70wt%, 15 ~ 20wt%, 10 ~ 15wt% and 5 ~ 10wt%, the Sodium hexametaphosphate 99 of the tripoly phosphate sodium STPP of additional described raw material 0.08 ~ 0.13wt%, 0.07 ~ 0.12wt% and the water of 22 ~ 25wt% again, stir, casting, room temperature maintenance 12 ~ 24h; Then dry 24 ~ 28h under 150 ~ 170 DEG C of conditions is incubated 4 ~ 7h under 1100 ~ 1200 DEG C of conditions, obtains alumina-silica lightening casting material.
The preparation method of the alumina-silica aglite in the present embodiment is with embodiment 4.
The prepared alumina-silica lightening casting material of the present embodiment is after testing: volume density is lower than 1.7g/cm
3; Cold crushing strength is 16.0 ~ 19.0MPa; Compressive strength 25.0 ~ 30.0MPa after 1100 ~ 1200 DEG C of burnings; Thermal conductivity is 0.40 ~ 0.45W/ (mK); Reheating linear change rate on reheating is lower than ± 0.5%.
This specific embodiment is raw materials used is the discarded ceramic tile of solid of bulk deposition, alleviates environmental stress, turns waste into wealth simultaneously.Goods adopt casting, and production technique is simple.Prepared alumina-silica light cinder brick is after testing: volume density is lower than 1.7g/cm
3; Cold crushing strength is 10.0 ~ 20.0MPa; After 1000 ~ 1300 DEG C of burnings, compressive strength is 25.0 ~ 45.0MPa; Thermal conductivity is 0.25 ~ 0.45W/ (mK); Reheating linear change rate on reheating is lower than ± 0.5%.
Therefore, the present invention have economize on resources, protection of the environment and the feature that reduces costs, prepared alumina-silica lightening casting material volume density is little, thermal conductivity is low, intensity is high and reheating linear change rate on reheating is little, is directly used in kiln and other Thermal Equipments.
Claims (7)
1. the preparation method of an alumina-silica lightening casting material, it is characterized in that alumina-silica fine powder, the discarded molding sand powder of 10 ~ 20wt% and the high-temperature cement of 5 ~ 15wt% of the first alumina-silica aglite taking 30 ~ 70wt%, 15 ~ 35wt% are as raw material, the water reducer of additional described raw material 0.15 ~ 0.25wt% and the water of 15 ~ 25wt% again, stir, casting, room temperature maintenance 12 ~ 24h; Then dry 20 ~ 36h under 100 ~ 200 DEG C of conditions is incubated 2 ~ 8h under 1000 ~ 1300 DEG C of conditions, obtains alumina-silica lightening casting material;
The preparation method of described alumina-silica aglite is: first taking the alumina-silica fine powder of 50 ~ 90wt% and the clay of 10 ~ 50wt% as raw material, stir 8 ~ 12h, the pore-forming material of the bonding agent of additional described raw material 5 ~ 10wt%, 15 ~ 35wt% and the water of 7 ~ 20wt% again, ageing mixture 24 ~ 48h, compression moulding; Then dry 4 ~ 24h under 80 ~ 200 DEG C of conditions is incubated 2 ~ 10h under 1000 ~ 1400 DEG C of conditions, and fragmentation, obtains alumina-silica aglite;
Described alumina-silica fine powder is ceramic tile waste material, and its particle diameter is less than 0.074mm; The main chemical compositions of alumina-silica fine powder is: Al
2o
3>=40wt%, SiO
2>=45wt%, Na
2o≤0.5wt%, K
2o≤2.5wt%.
2. the preparation method of alumina-silica lightening casting material according to claim 1, is characterized in that the particle diameter of described discarded molding sand powder is less than 0.088mm; The main chemical compositions of discarded molding sand powder is: Al
2o
3>=35wt%, SiO
2>=50wt%, ZrO
2≤ 5.5wt%.
3. the preparation method of alumina-silica lightening casting material according to claim 1, is characterized in that described water reducer is one or both in tripoly phosphate sodium STPP, Sodium hexametaphosphate 99 and polyacrylic water reducer.
4. the preparation method of alumina-silica lightening casting material according to claim 1, is characterized in that the particle diameter of described clay is less than 0.088mm; The main chemical compositions of clay is: Al
2o
3content>=30wt%, SiO
2content>=45wt%, TiO
2content≤0.8wt%, Fe
2o
3content≤2.0wt%.
5. the preparation method of alumina-silica lightening casting material according to claim 1, is characterized in that described pore-forming material is the one in chaff, straw, sawdust and rice husk.
6. the preparation method of alumina-silica lightening casting material according to claim 1, is characterized in that described bonding agent is one or both in Walocel MT 20.000PV, aluminium dihydrogen phosphate, polyvinyl alcohol and dextrin.
7. an alumina-silica lightening casting material, is characterized in that described alumina-silica lightening casting material is according to the prepared alumina-silica lightening casting material of preparation method of alumina-silica lightening casting material described in any one in claim 1 ~ 6.
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| CN107686363A (en) * | 2017-09-18 | 2018-02-13 | 北京利尔高温材料股份有限公司 | A kind of preparation method of the online material for repairing of environment-friendly type agitator |
| CN110963810A (en) * | 2019-12-30 | 2020-04-07 | 长兴兴鹰新型耐火建材有限公司 | Zirconium-mullite castable for waste incineration kiln and preparation process thereof |
| CN114014691A (en) * | 2021-12-15 | 2022-02-08 | 无锡远能耐火材料有限公司 | High-alumina heat-insulating brick and preparation method thereof |
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Inventor after: Wang Haiyang Inventor after: Jiang Wei Inventor after: Li Bing Inventor after: Ai Yuhong Inventor before: Li Shujing Inventor before: Xu Nana Inventor before: Li Yuanbing Inventor before: Zhang Jinlong Inventor before: Wang Lei Inventor before: Li Yawei Inventor before: Sang Shaobai |
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Effective date of registration: 20170814 Address after: 441721, Hubei province Xiangyang Gucheng county temple town Wan Ying Village Patentee after: Hubei Naijie lining material Co.,Ltd. Address before: 430081 construction of Qingshan District, Hubei, Wuhan Patentee before: Wuhan University of Science and Technology |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
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Denomination of invention: An aluminum silicon lightweight castable and its preparation method Effective date of registration: 20221212 Granted publication date: 20141203 Pledgee: Bank of China Limited Xiangyang Branch Pledgor: Hubei Naijie lining material Co.,Ltd. Registration number: Y2022980026609 |